Striking red sunset hits Andalucia

The red colouration resulted from a combination of the natural sunset and calima conditions, but other meteorologists pointed to other causes farther away. Calima refers to suspended dust and sand particles from the Sahara Desert that are transported by winds across to southern Spain, creating hazy atmospheric conditions. The phenomenon was not limited to Spain. Similar red sun sightings were reported in Chicago, where local meteorologists attributed the effect to smoke from Canadian wildfires.